Activated carbon has been known since antiquity as a powerful purification agent for air and water. It was introduced to the modern world via the European sugar refining industry in the early 1800s, and quickly swept the globe. As technology has advanced, activated carbon has become a key player in more and more industries. Today, plant engineers have found that an activated carbon guard bed can protect pricey equipment and catalysts from low concentration toxins that can cause damage. Cost-effective and easy to use, activated carbon guard beds are revolutionizing industrial processing.